Front wheel brake construction



May 2, 1933- J. w. HEINEY FRONT WHEEL BRAKE CONSTRUCTION Filed Feb. 2, 1951 2 Sheets-Sheet l lll ' INVEqrToR Jahn Wir/Mgg, -B MQ @du LCWfJ/Q a ATTORNEYS' May 2, 1933. J. w. HEINEY FRONT WHEEL BRAKE CONSTRUCTION Filed Feb. 1931 i 2 Sheets-Sheet 2 INVENTOR Jaim It( Hellweg,

@HEY (Miu, W11

MI IHS TTORNEY l.ovH1\rw. HEINEY-,QF aLLEn'roWNsPENNsyLvANiA@estenda'rofimiinnmrronu r L MoTon'coMPANY, oF NEW YoRKymYi.; A CORPORATION@ DELAWARE l V*The presentvinvention *relates to brake,v

' PFRNTWH'EELBRAKEons'mverlon f mechanism'for'dirigibleWheels and embodies,

`structures v'is' the` fact that .turning of they more specifically, an improved brake .actuating mechanism for dirigiblelfwheels whereby.

turning of the Wheelwith respect tothe operating mechanism doesnot affect the relative positions of the H-elelnents. i

' A common difficulty 1n jfront Wheel brake Wheel automatically, causesthe partial actuation ofthe .brakes, due to jthewheel turning M t upon an axis different from thev axis of the brakel operating mechanism; Numerous attempts have been made to 'overcome thisdii'ticulty butk none .has provided al successful mechanism' for accomplishing the above re-` sult, which isreadily manufactured and installed, as w'ell aseasily serviced. `The pres-f i ent invention therefore Vcontemplates the provision .of a brake voperating 'mechamsmV for dirigible Wheels, wherein the elements are so constructed as to maintain apredetermined .relationship therebetween regardless ofthef y 1 ablypositioned and secured in a desired p0-V turning movement of the fwheel.V

c Afurtherobjectof the y'nvention is to` provide a. brake" operating i ymechanism ofthe 'abovecharacter,whereinthe parts are simple in the power transmitting elementsmounted n i .Figure 2`ising fromthe right in Figure 1, and showing` of construction and readilylmanufactured ,u and installed, furthermore being of such 'nad ture as to be readily servicedduring'operationI ofthe vehicle.

'A further object ofthe inventionis to provide a brake operating mechanism, Whereonthe Wheel` and the relativelystationary portion of the vehiclemove in such fashion that the contacting portions thereofV lie substantially in the axisof turning of the Wheels. ,Further objects, not specifically enumerated above, Will-be apparent as the inventionv f is described in greater detailin connection with the accompanying drawings, wherein v:

Figure lisa view in front elevationpartlyj.. broken away Vand. in section showing thek brake" operating .mechanism of, the present invention. l y 1 f a rView 1n side elevation, lookthe axle'and Wheel .mounting element-Sire? moved in the interest Qf deafnessk v riedbyathe lever Figure 3 is a 'das Raf .llrlina' te the @beve drawings., a' X1? '1s '.ShQWnV at vl0baviera'.Spnfl'lelll,1112011 which knuckle l2; is! mounted, ...Afdijriglible y vieW-sh'owingwthe Y Operamg .mechanism of :Figure f freut! Wheel 13'isy mounted upontheir;,riiiclille ,theusiulfmannerndferrese bleke drum '14,5 Brake Shoes; 15 .CQ'PrateWth thebrak drumin a' W'ell known f shion and arefo to. Y Y vUpon journaling thesliaft" 18 as clearly seen in Fig- ;.ure '3., `Upon theshaft 18lisa-leverl21 Which i '19 d 'is vsecured to the shaft by means" of aebolt 22 and vis preferably curvedas shownin Figure A2. The-outer extremity .23 of the lever carries a contactmember 24 which is adjustsition by' meansgof a lock nut 25.-' The eX- tremity 23 is split'at 26 and nut 27 and bolt Y ntsv the tra1`1fsmitsturning'motien therethe Vdust coverf19of the brake mechamsmabushing 20 isvformed,"this bushing 128 secure ,the threadeldcontact member 24 in a desired fashiomthus cooperatingwith the :lock'n'ut'25- d The curvature fof the lever 21 issuch that the contacting face ofthe bearing ried. thereby is a bracket 29having a-ball` ysocket 30 which mounts oneend of shaft 31 lwith provision for universall movement with respect to the end of the bracket. The other .end of shaft 31 is mounted in a similar ymountving carriedupon. a Vbracket arm 32 which vis ,mounted on the knuckle spindle 11". An arm e.

33 is secured to, the 'shaft-30 and actuates the same to'el'ect the actuation of the br'akevmechanism through lever 21.. The motion of shaft .31 is transmittedjto lever 21 by a crank'arm 89 member 2,4 moves in an arcwhich is substani' tiallyy tangentto the axis of the spindle.

YUponv the front. axlel() or the spring carmeans of a boltv 35.*/ Rotation of the shaft 31 in the'pr'operdirection moves thearm 34 in a-,clockwi'se direction, as viewed inFigure 2, and elevates thebearing member 24 carf 34 rWhich is secured to the end of yshaft 31 yby 'i It will thus-be seen that the point of contact between the arm 34 and bearing member 24 moves substantially in the axis of the king pin and turning movement of the wheel 5 about such axis has practically no eiect upon the brake mechanism. The only time that such turning does effect the brake mechanism is when the arm 34 and lever 2l have been moved to an extreme clockwise position in applying the brakes. Even under this condition, the effect is so slight as to be negligible.

While the invention has been described 1 With specific reference to the accompanying drawings, it is not to be limitedgsave as defined in the appended claim.

I claim as my invention: 1. In combination with a dirigible Wheel 'having a brake, a brake cam, a spindle mounting the Wheel,A a lever actuating the cam, a bearing member `on the lever in the axis of the spindle, an operating shaftl carried bythe Vspindle mounting, and a` curved crank on the shafvzvghaving an engaging face `adapted to engage the bearing membersythe aXis of the shaft and lever lying on the same side of the spindle, and the axes of the crank, lever and point ofY contact betyveenthe bearing member and crank lyingin substantially the same planenV This specification' signed this 26th day of January, A. D. 1931. i v n n JOHN W. HEINEY. 

